Kubernetes

v1.36.3Kubernetes Core

Jul 23, 2026

Kubernetes v1.36.3 is a routine patch release fixing regressions and bugs introduced in v1.36, including a kubelet memory leak, a server-side apply 422 error, DRA scheduler panics and allocator miscounts, and kubeadm etcd resilience improvements. Go is bumped to 1.26.5. No breaking API changes or CVEs are disclosed.

Key changes (10)

Go toolchain bumped to 1.26.5
Kubelet memory leak regression fixed (introduced in 1.36)
DRA scheduler panic fixed when DeviceTaintRules feature is enabled and ResourceSlices change
Server-side apply 422 regression fixed for container-type list/map patches
DRA structured allocator counter bugs fixed to prevent pods from staying pending unnecessarily
cri-api JSON encoding of KeyValue value field reverted to pre-1.34 behavior
kubeadm etcd learner promotion made more resilient to transient client errors
kubeadm join now uses KubernetesAPICall timeout (default 1 minute) instead of 350ms retry for kubeadm-config ConfigMap fetch
kubeadm MemberPromote skips redundant etcd promote API call when member is already voting
kubelet no longer logs spurious V(4) messages for missing optional container annotations

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